Runes

Greater Mark of Magic Penetration is critical, since everything about Amumu is all magic damage. They work well with his auto attack, since it deals almost no damage but gives even more magic penetration.

Skill Sequence

After that, Tantrum is your primary ability. When it's fully leveled it does massive damage, and helps land that triple kill ace.

Once you have Sunfire Cape, Despair becomes especially good since you are dealing huge damage to everyone near you. Despair is especially good in 3v3 because of the number of off tank champs that are played. By reducing the opponents' magic resistance with your auto attacks, then hitting them with tantrum, despair, and sunfire cape, tanky characters will fall very fast.

Try to get a couple auto attacks in before using Curse of the Sad Mummy to maximize damage. In team fights, it's best to save the curse for the last second: the perfect moment to turn the fight or score an ace. Don't use it up front, wait for them to fully commit. This is especially important because you don't want it to be disrupted by stun/taunt/knocked airborne (although it's rare for that to happen).

Items

Boots of Swiftness are a must for Amumu! You need to be up close to them all the time, and when they focus on you, you need to get out of there fast. There is lots of CC in 3v3, but not enough to make Mercury's Treads better than boots of swiftness. Also, mobility is one of the keys to 3v3 since the map is so small. You can get anywhere fast using Boots of Swiftness, which makes them valuable for every situation in the game, where the other 2 common Amumu boots are only valuable in combat.

Sunfire Cape is designed for Amumu, since he always needs to be up close. It deals magic damage, which means is has a great synergy with Amumu's passive.

At this point, you are still squishy, and can be quickly focused down and CC'd. Because you don't have Mercury's Treads, Banshee's Vail is extremely important for mid to late game survivability. If you find you have no trouble staying alive you can skip it.

Rylai's Crystal Scepter rounds out the build, and makes late game unwinnable for the opposing team. Get Blasting Wand first, since you are already hard enough to kill. If you finish crystal scepter, you will be slowing opponents with all of your abilities, and since you have Boots of Swiftness there is no hope of them escaping! If the game gets to that point [almost never does] you will know it's over for them.

If the game is still going and you are feeling squishy, go for Guardian Angel, or if you want to deal more damage you could go for Deathfire Grasp. Remember to use it's active ability at the beginning of the fight! It's especially good against off tank teams, which are common in 3v3.

Summoner Spells

Ghost is a must, since it allows you to run through creeps to escape or chase. In 3v3 it's better than flash, since it allows you to get anywhere in the map instantly.

How to Play

The most important part of 3v3, especially with a slow character, is map awareness. You need to know when ganks are coming your way, and when an opportunity to gank shows up.

Bandage Toss can win you the game if you hit them, and lose you the game if you hit a creep by mistake. Practice practice practice, because when it counts you will be glad you did.

Play style for Amumu is similar to 5v5: Q, W, hit, E, hit, hit... if their team showed up, R. If they're still alive, Ghost or Bandage Toss again. If they chase you or stun you, hopefully you have flash, cleanse, or exhaust.

Summary

When played well, Amumu is the ultimate champ for turning team fights. Dirty tricks like bandage toss from behind a wall into their team, followed by Curse of the Sad Mummy while your team focuses them down, create many opportunities for Aces.

League of Legends is a team based, real time strategy game set in a mythical world of swords & magic where epic battles decide the fate of mystical nations. Game players take on the role of a Summoner who conjures and controls champions to fight for them at the Institute of War. During game play champions gain experience and items to enhance their skills and abilities. How players develop and play their champions can be the difference between a crushing defeat or a glorious victory!